The OFS-2000 has a range of 0-40m/sec and is the only flow sensor that gives a true non-contracting cross-stack flow measurement of the process.
OSi’s patented Optical Flow Sensor (OFS) makes drift-free measurements across the entire stack, duct or pipe diameter and calculates an accurate average flow reading.
The OFS uses EPA Method 14 approved optical scintillation technology. The optical scintillation technique relies on advanced Digital Signal Processing (DSP) electronics to “see” and measure the movement of turbulence found in a gaseous flow stream to provide highly accurate, path-averaged air velocity measurements. The accuracy of the OFS has been proven both in NIST’s wind tunnel and in numerous real-world installations.
Advantages
- System not sensitive to dirty optics / high opacity media
- System is non-intrusive to media flow –
- No flow media means high temperature limits.
- Measurement is true cross-stack line average
- Fully meets all EPA 40CFR Parts 60 & 75
- Unaffected by temperature, pressure, humidity, density, path length
- Easy installation and optical alignment – once interconnect cable is run and ports are prepared, system can be connected, aligned and operating in less than 30 minutes
- DSP-based signal processing means no analog “drift”.
- Includes built-in continuous self-test routines to warn of potential problems before the point of failure.
- Cross stack/duct/pipe line measurement for more accurate flow readings.
- Measurement path 90º to stack; second plat-form not required – save $100K or more
- Easily replaces existing ultrasonic sensors.
- Minimal upstream/downstream diameters; typically 2 & 1, not 20 & 10 like others.
- Long-term reliability: no blowers or moving parts; operates unattended – 24/ 7/365.
- Ultra-low maintenance design.
- Rugged; designed for harsh environments.
- Built in continuous self-test diagnostics.
- Measurement unaffected by path length & media pressure, moisture & opacity.
- Wide versatility, NIST tested and unbeatable combination of advanced technology, high performance and proven reliability!
OFS-2000 Options
- Order Z-Purge Option for Class I Div I/II applications.
- Standard Control Unit is rack mount; for wall mount, order 1910-301, NEMA4 Option.
- For custom receiver cable length, order 1910-216-nnn where “nnn” is cable length in feet (max 300).
OFS-2000 Accessories
- 1910-431-nn Sight Glass with gaskets for media isolation (2 required, multiple models)
- For custom receiver cable length, order 1910-216-nnn where “nnn” is cable length in feet (max 300).
- Standard Control Unit is rack mount; for wall mount, order 1910-301, NEMA4 Option.
